14 U. S. BUREAU OF FISHERIES 



39. Rhinotriacis henlei Gill. 



Coast of California from Humboldt Bay to Monterey; rather rare. 

 Rhiiiotriacis henlei Gill, Proc. Acad, Nat. Sci. Phila., XIV, 1862, 486, 

 San Francisco. 



Genus 25. TRIAKIS Miiller and Henle. 



Triakis MuUer and Henle, Mag. Nat. Hist., II, 1838, 36 {Triakis scyllium); 

 corrected to Triads by authors. 



40. Triakis semifasciatum Girard. Cat shark; Leopard shark. 



Cape IMendocino to San Diego; common. 



Triakis semifasciattnn Girard, Proc. Acad. Nat. Sci. Phila., VII, 1854, 



196, Presidio de San Francisco. 

 Mustelus felis Ayres, Proc. Calif. Acad. Nat. Sci., 1854, 17, San Francisco. 



Genus 26. GAIEORHINUS Blainville. 



Galeorhinus Blainville, Bull. Soc. Philom., 1816, 121 {Squalus galeus L.; 



restricted bv Gill). 

 Eugaleus Gill!^ Proc. Acad. Nat. Sci. Phila., XVI, 1864, 148 (Squalus 



galeus L.); the first species named by Blainville being Squalus mustelus, 



for which reason Garman uses Galeorhinus as the name of the genus 



here called Mustelus. 



41. Galeorhinus zyopterus Jordan and Gilbert. Oil shark: Soupj-fin shark. 



Coast of southern and Lower California, from San Francisco to Cedros 



Island; very abundant. 

 Galeorhinus zyopterus Jordan and Gilbert, Synop. Fishes North Amer., 



1883, 871, San Pedro, Calif. 



Genus 27. TRI.ffiNODON Miiller and Henle. 



Trisenodon Miiller and Henle, Plagiostomen, 1841, 55 {Carcharias obesus 

 Riippell). 



42. Triaenodon obesus (Riippell). 



Tropical Pacific; reported from Cocos Island. 



Carcharias obesus Riippell, Neue Wirbel., Fisch., 1835, 64, pi. 18, fig. 2, 

 Djidda, .Arabian Coast of Red Sea. 



Genus 28. GALEOCERDO Muller and Henle. 



Galeocerdo Miiller and Henle, Plagiostomen, 1838, 59 {Galeocerdo tigrinus 



Miiller and Henle). 

 Boreogaleus Gill, Ann. Lye. Nat. Hist. N. Y., VII, 1861, 411 {Squalus 

 arcticus Faber). 



43. Galeocerdo arcticus (Faber). Spotted shark; Leopard shark; Tiger shark; 



Tigronc. 

 Tropical seas; occasionally to Iceland, Cape Cod, and San Diego. 

 Squalus arcticus Faber, Fischc Islands, 1829, 17, Iceland and neighboring 



seas. 

 Galeocerdo tigrinus Muller and Henle, Plagiostomen, 1838, 59, Pondicherry. 

 Galeus macidatus Ranzani, De Novis Spccieljus Piscium, Dissert. Prima, 



in Novi Com. Acad. Boron., IV, 1840, 68, Brazil. 



Genus 29. HEMIGAIEUS Bleeker. 



Hemigaleus Bleeker, Vcrh. liot. Gen., XIV, 1852, 45 (Hemlgaleus mi- 

 crostoma Bleeker); not Hemigalea, an earlier genus of mammals. 



44. Hemigaleus pectoralis Garman. 



Coast of New England, probably in the Gulf Stream. 



Hemigaleus pectoralis Garman, Bull. Mus. Comp. Zool., XLIV, 1906, 203, 



"Afiuarial Gardens," the fishes in which were taken off Massachusetts 



and Rhode Island. 



Genus 30. SCOLIODON Miiller and Henle. 



Scoliodon Miiller and Henle, Wiegmann's Archiv, I, 1837, 398 (Scoliodon 

 laticaudus Miiller and Henle. 



45. Scoliodon terree-novse (Richardson). Sharp-nosed shark; Neivfouiidland 



shark. 

 Cape Cod to Florida; very common southward along the Atlantic coast. 

 Squalus (Carcharias) terrx-novse Richardson, Fauna Bor.-Amer., Ill, 1836, 



289, Newfoundland; an error, probably for Florida. 

 Squalus punctatus Mitchill, Trans. Lit." Phil. Soc. N. Y., I, 1815, 483, 



New York; not of Bloch and Schneider. 



